Refillable pencil



March 4., 1924 1,485,484] P. CHARTON REFILLABLE PENCIL Filed June 9. 1922/2 2 Sheets-Sheet 1 Pierre (Year/hi2 6301 may March 4 1924. 1,485,484

P. CHARTON REFILLABLE PENCI L Filed June 9. 1922 2 Sheets-Sheet 2 mlllllli fatented Mar. 4, 1924..

PIERRE CHARTON, OF MONTREAL, QUEBEC, CANADA.

REFILLABLE PENCIL.

Application filed June 9, 1922. Serial No. 567,102.

To all whom it may concern:

Be it known that I, PIERRE GHARTON, a subject of the King of Great Britain, residing at Montreal, Province of Quebec, Canada, have invented certain new and useful Improvements in Refillable Pencils; and I do hereby declare that the following is a full, clear, and exact description of the A further object of the invention is the provision of novel means for placing the filling device under pressure and in condition for operation while the pencil is being charged. I

Further objects and advantages of the invention will appear as the description con tinues, the same being set forth in the fol lowing specification of which the attached drawings form a part and in vwhich:

Figure 1 is a central sectional view through a pencil constructed according to the invention;

Figure 2 is a section on line 2-2 of Figure 1;

Figure 3 is a view of the upper part of the pencil looking from underneath with the lower portion removed;

Figure a is a plan view of the lower end of the pencil with the top portion taken off;

Figure 5 is a detached view of the follower;

Figure 6 is a central sectional view through a modification;

Figures 7, 8 and 9 are sections on the lines 7'7, 88 and 9-9 respectively of Figure 6; and,

Figure 10 is a detached view of the follower.

Referring to the accompanying drawings by corresponding reference characters throughout the various views, the pencil comprises a body which consists of the case 1 and block 2. The case is recessed at its upper end, and internally threaded at the portion designated by the numeral 3.

The inner end 4: of the block is internally threaded for reception within the upper end of the case,and has formed therein a substantially circular chamber 5 Which is-eccentric of the body and includes the central axis thereof. The usual bore 7 passes in a straight line through these parts in the usual manner. The tip 8 is separable from the block, and has attached thereto the driver rod 9 in a manner well known in the art.-- i The tip 8, carrying with it the driver, may thus readily be lifted from the block. The lower portion of the bore, namely that part in the vicinity of the nozzle 10 con 7o tains the lead 11.

WVithin the chamber 5 is received a sub-.

stantially circular container 12 having integral interior'wall or bushing 10. The

substantially annular chamber. formed between the interior wall 11 andthe exterior wall of the container is adapted to receive a plurality of leads 13 in juxtaposition. An internal gear 14 is formed in the case and concentric with the bore, for a purpose hereafter to be pointed out. A shaft 15, terminating in trunnions 16, is mounted within the confines of the wall 11,.one of these trunnions being journalled in the block 2,

as indicated by the numeral 17 The other the connecting arms 20. The wall 11 has circumferential slots 21 formed therein to allow free passage of the arms 20. The follower may be placed under pressure against the leads by'means of a'spring 22 surrounding the shaft 15, one end of the spring being secured to a relatively stationary part of the body, while the other end is fixed to the shaft. The operation of this spring will presently be pointed out. The

other trunnion carrles a pinion 23 adapted to mesh with the driving pinion 24 which is journalled in the, block.

For the purpose of pointing out the operation, let it be assumed that the block 2 is separated from the threaded end 30f the 5 case and that a supply of leads is introduced into the container 12 in the manner shown in Figure 2. The block is then threaded into the case and thelower edge of the pinion 18 will eventually engage the upper edge of the internal gear 14, the follower 19 having previously been moved to the rear by the gears 23, 2%. Upon subsequent turning of the block into the threads 3, the pinion will naturally travel around the gear, whereby the spring is wound and the follower is placed under pressure against the leads. When one of the leads 11 is consumed, the tip 8 and driver 9 are lifted, as already explained, until the lower end of the latter is raised above the upper ends of the leads 13. The follower then forces an other lead into the lower portion of the bore 7, and the cap and driver are returned to normal position.

In the modification shown in Figures 7 to 10 inclusive, the case has hollow end or upper portion 31. The extreme upper end of the case is threaded as at 32 for reception of an externally threaded body portion Within the hollow portion 31 is disposed ablock 3i having formed therein a substantially spiral chamber This passage includes and communicates with the central longitudinal axis 36 of the pencil. The chamber receives a container 37 adapted to hold a plurality of leads 38 in juxtaposition. The inner end of the container 37, which partly encloses the center of the pencil body, is open, as shown in Figures 7 and 8, for the reception of a new lead. The ends of this portion, however, are closed, as clearly shown in Figure 9, by the numeral 39. These closed ends 39 are surrounded by collars 41 loosely mounted thereon, which are joined by the rod 42. A finger 43 extends laterally from the rod, exterior of the case, where it is provided with a knob id. The finger 43 carries a loose block 45 one side of which is convex, as at 46, for the accommodation of the lead farthest away from the bore of the pencil. The stem is slidable in a slot 47 formed in the wall of the portion 31, so that a new lead may be readily pushed into position when required.

The block 34 has its lower end disposed within the case in such a manner as to leave a space 48 in which is lodged the lower collar ll. A spring 49 surrounds this collar having one end secured to the bottom of the block by the pin 50, while the other end bears against a nub 51 formed on the side of the lower collar 41. By means of this spring the lower collar -l-l tends to urge the finger 43 and block 45 towards the inner end of the container 37. Thus when it is desired to replace a lead into the central bore, the tip 8 carrying with it the driver rod 40 is raised in the manner described in the pre vious modification, and a new lead is automatically forced into place through the action of the spring. The cap and driver rod are then lowered, forcing the lead into the nozzle in the usual manner.

When the pencil is empty, the portion 33 is unscrewed and the knob a l is pulled to the outer end of the container 37. A fresh supply of lead is then inserted to occupy the position shown in Figures 7 and 3, and the portion 33 is returned to position. It will be noted that whatever tension of the spring has been lost in the.

discharge of the various leads is regained when the knob is pulled back after refill.

Having thus fully described the invention, what I claim as new and desire to protect by Letters Patent is 1. A pencil comprising a body having a bore therein, an internal gear formed around the bore, a chamber formed in the body and communicating with the bore, said chamber being adapted to receive a plurality of leads, a follower having trunnlons journalled in said body, a pinion secured to one of said trunnions and meshing with the gear, and means for maintaining said follower under pressure.

2. A pencil comprising a body having a bore therein, an internal gear formed around the bore, a chamber formed in the body and communicating with the bore, said chamber being adapted to receive a plurality of leads, a follower having trunnions journalled in said body, a pinion secured to one of said trunnions and meshing with the gear, and means exterior of the body for moving said follower.

3. A pencil comprising a body having a bore therein, a chamber formed in the body and communicating with the bore, said cham-- her being adapted to contain a plurality of leads, a shaft journalled in said body and having a follower secured thereto, said follower being disposed in the chamber, an internal gear formed around the bore, a pinion secured to said shaft and adapted to mesh with the gear, and a spring surrounding said shaft.

In witness whereof I have hereunto set my hand.

PIERRE CHARTON. 

